I don't think you can do this via javascript easily - in fact you don't want to.
Sounds like you want to dynamically change themeing of a website.
Touch uses the SASS and Compass toolsets to theme Sencha and produces a new CSS resource files as a result (same as ExtJS).
You can create multiple themes which produce separate css files and then a user can switch themes by you switching resources (via a redirect)

I don't think you can do this via javascript easily - in fact you don't want to.
Sounds like you want to dynamically change themeing of a website.
Touch uses the SASS and Compass toolsets to theme Sencha and produces a new CSS resource files as a result (same as ExtJS).
You can create multiple themes which produce separate css files and then a user can switch themes by you switching resources (via a redirect)

I don't think you can do this via javascript easily - in fact you don't want to.
Sounds like you want to dynamically change themeing of a website.
Touch uses the SASS and Compass toolsets to theme Sencha and produces a new CSS resource files as a result (same as ExtJS).
You can create multiple themes which produce separate css files and then a user can switch themes by you switching resources (via a redirect)